And you should read the article more carefully - the authors point is that mindless reassurance of one's self-esteem is counter-productive. Only by confronting reality, an often painful experience, can you overcome the obstacles.
Re: the bolded above - yes, but this doesn't mean there's competition between associates, as @maximumbob indicates. There's plenty of work to go around. Whether you make target or not is unaffected by what other people are doing. Whether you perform well is unaffected by what other people are doing - except to the extent that teamwork generally leads to better performance. If a poor performer is let go, it's not because of competition - it's because they're a poor performer.
I didn't say they're being ridiculous, but I don't like the effect that multiple such posters are having. If that's not at least partially providence's problem, than I don't really know why she started this thread. If it's just "hey guys, this info is already on the forums", that could be true for literally 99% of all topics that people make.